1989 Pontiac 20th Anniversary Turbocharged Trans Am (page 1)
This is a 1989 20th Anniversary Pontiac Trans Am
Indianapolis Pace Car, number 649. It has a 3.8 liter,
turbocharged, electronically fuel injected V-6 similar to the engine originally developed for Buick Grand National
Turbo Regals. These cars are also known as TTAs (Turbo Trans Am). A company called Prototype
Automotive Services manufactured 1550 of
these cars and the sticker price was approximately $31,000.
this car in 2008 with 17,300 miles on it. A dealership in NJ originally
owned this car but
only put a few miles on it. The second
owner was a preservationist. He used to put TWO car covers on it
and kept it in a garage.
The third owner added a lot of aftermarket equipment to the
engine which significantly increased
the original horsepower.
Shortly after I bought this car, I removed the original "number's matching" engine
to store it and preserve the car's future "collector" value.
I then built a separate engine from scratch which was completed in
2010. Pictures of the teardown and buildup appear in
hyperlinks at the bottom of this page.
|The interior of this car is impressive, no? These cars
came with a 4 speed overdrive 200-4R automatic transmission mated to a
heavy-duty 3.20 rear end gear-set. The gold rims are 16" and the
tires are 50 series. My transmission has been beefed up with a
duty input drum, a shift kit, shaved governor (for higher RPM shifts) and
a stronger clutch pack. The stock converter was a "lock-up" type
but the increased power
of my modified engine could destroy one of those.
So the original converter has been replaced with an aftermarket "non-lockup" higher-stall torque converter.
engine now includes forged pistons, forged rods, forged crankshaft,
steel main caps, ported cylinder heads, roller rocker arms, larger
valves, roller-lifter cam, larger turbo, larger throttle body, larger
intercooler and injectors. The exhaust is now 3" stainless steel
pipe. It also has an Accel GEN7+ digital engine management
control system. You can tune the engine using a laptop. The
includes a 2 step rev limiter and can trigger 2 stages of nitrous oxide
(and who needs that in this car???).
|This accessory box, and it's contents came with every
Turbo Trans Am. On eBay, these boxes commonly sell for between
$500 and $1500! It
includes a unique "turbo" key fob, door decals, warranty
brochures and an owner's manual. One of the key
fobs alone once sold for $350 on eBay.
For some reason I received TWO of
these valuable boxes (though one of them contained very few of the items) from the previous owner! Not complaining...
I gave the second box to a friend of mine in Michigan that owns 3 TTA's. I also received the 1989 Pontiac Firebird service manual (about 2"
thick") and the 20th Anniversary Trans Am service manual supplement (1" thick)
from the last owner.
My car is number 649 of the 1550 cars that were built. A company
called PAS built
the special V6 turbocharged engine in February of 1989. It was
installed into a Firebird chassis at GM's Van Nuys assembly plant.
These cars were then returned to PAS where other unique TTA equipment was
added (brakes, etc.), then shipped to
dealers. Mine was shipped from CA to northern NJ in March, 1989.